|-3-1|-5X(-4)的平方-0.5除0点2=?

问题描述:

|-3-1|-5X(-4)的平方-0.5除0点2=?

|-3-1|-5X(-4)的平方-0.5除0点2
=|-3-1|-5×(-4)²-0.5÷0.2
=4-80-2.5
=-78.5